The BICEP2 telescope at right (with the South Pole Telescope at left) operated from the Dark Sector Laboratory at the Amundsen-Scott South Pole Station from 2010 until 2012. BICEP3, now in its place, is collecting data on the cosmic microwave background to search for hallmarks of inflation imprinted on this signal by the gravitational waves it spurred. Although evidence of inflation based on BICEP2 observations was announced in 2014, the signal has since been attributed to cosmic dust.